diff options
Diffstat (limited to 'vendor/github.com/pmezard/go-difflib/difflib/difflib_test.go')
| -rw-r--r-- | vendor/github.com/pmezard/go-difflib/difflib/difflib_test.go | 426 |
1 files changed, 0 insertions, 426 deletions
diff --git a/vendor/github.com/pmezard/go-difflib/difflib/difflib_test.go b/vendor/github.com/pmezard/go-difflib/difflib/difflib_test.go deleted file mode 100644 index d725119..0000000 --- a/vendor/github.com/pmezard/go-difflib/difflib/difflib_test.go +++ /dev/null @@ -1,426 +0,0 @@ -package difflib - -import ( - "bytes" - "fmt" - "math" - "reflect" - "strings" - "testing" -) - -func assertAlmostEqual(t *testing.T, a, b float64, places int) { - if math.Abs(a-b) > math.Pow10(-places) { - t.Errorf("%.7f != %.7f", a, b) - } -} - -func assertEqual(t *testing.T, a, b interface{}) { - if !reflect.DeepEqual(a, b) { - t.Errorf("%v != %v", a, b) - } -} - -func splitChars(s string) []string { - chars := make([]string, 0, len(s)) - // Assume ASCII inputs - for i := 0; i != len(s); i++ { - chars = append(chars, string(s[i])) - } - return chars -} - -func TestSequenceMatcherRatio(t *testing.T) { - s := NewMatcher(splitChars("abcd"), splitChars("bcde")) - assertEqual(t, s.Ratio(), 0.75) - assertEqual(t, s.QuickRatio(), 0.75) - assertEqual(t, s.RealQuickRatio(), 1.0) -} - -func TestGetOptCodes(t *testing.T) { - a := "qabxcd" - b := "abycdf" - s := NewMatcher(splitChars(a), splitChars(b)) - w := &bytes.Buffer{} - for _, op := range s.GetOpCodes() { - fmt.Fprintf(w, "%s a[%d:%d], (%s) b[%d:%d] (%s)\n", string(op.Tag), - op.I1, op.I2, a[op.I1:op.I2], op.J1, op.J2, b[op.J1:op.J2]) - } - result := string(w.Bytes()) - expected := `d a[0:1], (q) b[0:0] () -e a[1:3], (ab) b[0:2] (ab) -r a[3:4], (x) b[2:3] (y) -e a[4:6], (cd) b[3:5] (cd) -i a[6:6], () b[5:6] (f) -` - if expected != result { - t.Errorf("unexpected op codes: \n%s", result) - } -} - -func TestGroupedOpCodes(t *testing.T) { - a := []string{} - for i := 0; i != 39; i++ { - a = append(a, fmt.Sprintf("%02d", i)) - } - b := []string{} - b = append(b, a[:8]...) - b = append(b, " i") - b = append(b, a[8:19]...) - b = append(b, " x") - b = append(b, a[20:22]...) - b = append(b, a[27:34]...) - b = append(b, " y") - b = append(b, a[35:]...) - s := NewMatcher(a, b) - w := &bytes.Buffer{} - for _, g := range s.GetGroupedOpCodes(-1) { - fmt.Fprintf(w, "group\n") - for _, op := range g { - fmt.Fprintf(w, " %s, %d, %d, %d, %d\n", string(op.Tag), - op.I1, op.I2, op.J1, op.J2) - } - } - result := string(w.Bytes()) - expected := `group - e, 5, 8, 5, 8 - i, 8, 8, 8, 9 - e, 8, 11, 9, 12 -group - e, 16, 19, 17, 20 - r, 19, 20, 20, 21 - e, 20, 22, 21, 23 - d, 22, 27, 23, 23 - e, 27, 30, 23, 26 -group - e, 31, 34, 27, 30 - r, 34, 35, 30, 31 - e, 35, 38, 31, 34 -` - if expected != result { - t.Errorf("unexpected op codes: \n%s", result) - } -} - -func ExampleGetUnifiedDiffCode() { - a := `one -two -three -four -fmt.Printf("%s,%T",a,b)` - b := `zero -one -three -four` - diff := UnifiedDiff{ - A: SplitLines(a), - B: SplitLines(b), - FromFile: "Original", - FromDate: "2005-01-26 23:30:50", - ToFile: "Current", - ToDate: "2010-04-02 10:20:52", - Context: 3, - } - result, _ := GetUnifiedDiffString(diff) - fmt.Println(strings.Replace(result, "\t", " ", -1)) - // Output: - // --- Original 2005-01-26 23:30:50 - // +++ Current 2010-04-02 10:20:52 - // @@ -1,5 +1,4 @@ - // +zero - // one - // -two - // three - // four - // -fmt.Printf("%s,%T",a,b) -} - -func ExampleGetContextDiffCode() { - a := `one -two -three -four -fmt.Printf("%s,%T",a,b)` - b := `zero -one -tree -four` - diff := ContextDiff{ - A: SplitLines(a), - B: SplitLines(b), - FromFile: "Original", - ToFile: "Current", - Context: 3, - Eol: "\n", - } - result, _ := GetContextDiffString(diff) - fmt.Print(strings.Replace(result, "\t", " ", -1)) - // Output: - // *** Original - // --- Current - // *************** - // *** 1,5 **** - // one - // ! two - // ! three - // four - // - fmt.Printf("%s,%T",a,b) - // --- 1,4 ---- - // + zero - // one - // ! tree - // four -} - -func ExampleGetContextDiffString() { - a := `one -two -three -four` - b := `zero -one -tree -four` - diff := ContextDiff{ - A: SplitLines(a), - B: SplitLines(b), - FromFile: "Original", - ToFile: "Current", - Context: 3, - Eol: "\n", - } - result, _ := GetContextDiffString(diff) - fmt.Printf(strings.Replace(result, "\t", " ", -1)) - // Output: - // *** Original - // --- Current - // *************** - // *** 1,4 **** - // one - // ! two - // ! three - // four - // --- 1,4 ---- - // + zero - // one - // ! tree - // four -} - -func rep(s string, count int) string { - return strings.Repeat(s, count) -} - -func TestWithAsciiOneInsert(t *testing.T) { - sm := NewMatcher(splitChars(rep("b", 100)), - splitChars("a"+rep("b", 100))) - assertAlmostEqual(t, sm.Ratio(), 0.995, 3) - assertEqual(t, sm.GetOpCodes(), - []OpCode{{'i', 0, 0, 0, 1}, {'e', 0, 100, 1, 101}}) - assertEqual(t, len(sm.bPopular), 0) - - sm = NewMatcher(splitChars(rep("b", 100)), - splitChars(rep("b", 50)+"a"+rep("b", 50))) - assertAlmostEqual(t, sm.Ratio(), 0.995, 3) - assertEqual(t, sm.GetOpCodes(), - []OpCode{{'e', 0, 50, 0, 50}, {'i', 50, 50, 50, 51}, {'e', 50, 100, 51, 101}}) - assertEqual(t, len(sm.bPopular), 0) -} - -func TestWithAsciiOnDelete(t *testing.T) { - sm := NewMatcher(splitChars(rep("a", 40)+"c"+rep("b", 40)), - splitChars(rep("a", 40)+rep("b", 40))) - assertAlmostEqual(t, sm.Ratio(), 0.994, 3) - assertEqual(t, sm.GetOpCodes(), - []OpCode{{'e', 0, 40, 0, 40}, {'d', 40, 41, 40, 40}, {'e', 41, 81, 40, 80}}) -} - -func TestWithAsciiBJunk(t *testing.T) { - isJunk := func(s string) bool { - return s == " " - } - sm := NewMatcherWithJunk(splitChars(rep("a", 40)+rep("b", 40)), - splitChars(rep("a", 44)+rep("b", 40)), true, isJunk) - assertEqual(t, sm.bJunk, map[string]struct{}{}) - - sm = NewMatcherWithJunk(splitChars(rep("a", 40)+rep("b", 40)), - splitChars(rep("a", 44)+rep("b", 40)+rep(" ", 20)), false, isJunk) - assertEqual(t, sm.bJunk, map[string]struct{}{" ": struct{}{}}) - - isJunk = func(s string) bool { - return s == " " || s == "b" - } - sm = NewMatcherWithJunk(splitChars(rep("a", 40)+rep("b", 40)), - splitChars(rep("a", 44)+rep("b", 40)+rep(" ", 20)), false, isJunk) - assertEqual(t, sm.bJunk, map[string]struct{}{" ": struct{}{}, "b": struct{}{}}) -} - -func TestSFBugsRatioForNullSeqn(t *testing.T) { - sm := NewMatcher(nil, nil) - assertEqual(t, sm.Ratio(), 1.0) - assertEqual(t, sm.QuickRatio(), 1.0) - assertEqual(t, sm.RealQuickRatio(), 1.0) -} - -func TestSFBugsComparingEmptyLists(t *testing.T) { - groups := NewMatcher(nil, nil).GetGroupedOpCodes(-1) - assertEqual(t, len(groups), 0) - diff := UnifiedDiff{ - FromFile: "Original", - ToFile: "Current", - Context: 3, - } - result, err := GetUnifiedDiffString(diff) - assertEqual(t, err, nil) - assertEqual(t, result, "") -} - -func TestOutputFormatRangeFormatUnified(t *testing.T) { - // Per the diff spec at http://www.unix.org/single_unix_specification/ - // - // Each <range> field shall be of the form: - // %1d", <beginning line number> if the range contains exactly one line, - // and: - // "%1d,%1d", <beginning line number>, <number of lines> otherwise. - // If a range is empty, its beginning line number shall be the number of - // the line just before the range, or 0 if the empty range starts the file. - fm := formatRangeUnified - assertEqual(t, fm(3, 3), "3,0") - assertEqual(t, fm(3, 4), "4") - assertEqual(t, fm(3, 5), "4,2") - assertEqual(t, fm(3, 6), "4,3") - assertEqual(t, fm(0, 0), "0,0") -} - -func TestOutputFormatRangeFormatContext(t *testing.T) { - // Per the diff spec at http://www.unix.org/single_unix_specification/ - // - // The range of lines in file1 shall be written in the following format - // if the range contains two or more lines: - // "*** %d,%d ****\n", <beginning line number>, <ending line number> - // and the following format otherwise: - // "*** %d ****\n", <ending line number> - // The ending line number of an empty range shall be the number of the preceding line, - // or 0 if the range is at the start of the file. - // - // Next, the range of lines in file2 shall be written in the following format - // if the range contains two or more lines: - // "--- %d,%d ----\n", <beginning line number>, <ending line number> - // and the following format otherwise: - // "--- %d ----\n", <ending line number> - fm := formatRangeContext - assertEqual(t, fm(3, 3), "3") - assertEqual(t, fm(3, 4), "4") - assertEqual(t, fm(3, 5), "4,5") - assertEqual(t, fm(3, 6), "4,6") - assertEqual(t, fm(0, 0), "0") -} - -func TestOutputFormatTabDelimiter(t *testing.T) { - diff := UnifiedDiff{ - A: splitChars("one"), - B: splitChars("two"), - FromFile: "Original", - FromDate: "2005-01-26 23:30:50", - ToFile: "Current", - ToDate: "2010-04-12 10:20:52", - Eol: "\n", - } - ud, err := GetUnifiedDiffString(diff) - assertEqual(t, err, nil) - assertEqual(t, SplitLines(ud)[:2], []string{ - "--- Original\t2005-01-26 23:30:50\n", - "+++ Current\t2010-04-12 10:20:52\n", - }) - cd, err := GetContextDiffString(ContextDiff(diff)) - assertEqual(t, err, nil) - assertEqual(t, SplitLines(cd)[:2], []string{ - "*** Original\t2005-01-26 23:30:50\n", - "--- Current\t2010-04-12 10:20:52\n", - }) -} - -func TestOutputFormatNoTrailingTabOnEmptyFiledate(t *testing.T) { - diff := UnifiedDiff{ - A: splitChars("one"), - B: splitChars("two"), - FromFile: "Original", - ToFile: "Current", - Eol: "\n", - } - ud, err := GetUnifiedDiffString(diff) - assertEqual(t, err, nil) - assertEqual(t, SplitLines(ud)[:2], []string{"--- Original\n", "+++ Current\n"}) - - cd, err := GetContextDiffString(ContextDiff(diff)) - assertEqual(t, err, nil) - assertEqual(t, SplitLines(cd)[:2], []string{"*** Original\n", "--- Current\n"}) -} - -func TestOmitFilenames(t *testing.T) { - diff := UnifiedDiff{ - A: SplitLines("o\nn\ne\n"), - B: SplitLines("t\nw\no\n"), - Eol: "\n", - } - ud, err := GetUnifiedDiffString(diff) - assertEqual(t, err, nil) - assertEqual(t, SplitLines(ud), []string{ - "@@ -0,0 +1,2 @@\n", - "+t\n", - "+w\n", - "@@ -2,2 +3,0 @@\n", - "-n\n", - "-e\n", - "\n", - }) - - cd, err := GetContextDiffString(ContextDiff(diff)) - assertEqual(t, err, nil) - assertEqual(t, SplitLines(cd), []string{ - "***************\n", - "*** 0 ****\n", - "--- 1,2 ----\n", - "+ t\n", - "+ w\n", - "***************\n", - "*** 2,3 ****\n", - "- n\n", - "- e\n", - "--- 3 ----\n", - "\n", - }) -} - -func TestSplitLines(t *testing.T) { - allTests := []struct { - input string - want []string - }{ - {"foo", []string{"foo\n"}}, - {"foo\nbar", []string{"foo\n", "bar\n"}}, - {"foo\nbar\n", []string{"foo\n", "bar\n", "\n"}}, - } - for _, test := range allTests { - assertEqual(t, SplitLines(test.input), test.want) - } -} - -func benchmarkSplitLines(b *testing.B, count int) { - str := strings.Repeat("foo\n", count) - - b.ResetTimer() - - n := 0 - for i := 0; i < b.N; i++ { - n += len(SplitLines(str)) - } -} - -func BenchmarkSplitLines100(b *testing.B) { - benchmarkSplitLines(b, 100) -} - -func BenchmarkSplitLines10000(b *testing.B) { - benchmarkSplitLines(b, 10000) -} |